I'm glad you're taking the Patton route with this, because I can certainly see where the frustation could morph into anger pretty quickly.
I know going back to Big Midwestern City is sounding pretty good to you about now, I just can't picture you leaving Themselves while you do it. I also can't picture STBX jumping at the chance to be a full-time single mother.
I don't have enough knowledge of the legal side of STBX keeping her new purchase, while you would have to sell the family home to keep it all right-side-up. Gypsy may be on to something though, it may be her condo that goes.
Nice of her to keep the messes coming to keep you at attention at all times!
@SP"...using it to fuel a solution."
There's this great coastal city down south that I know about. Really friendly people, actually not as expensive as one might think, and some really good schools. (Since everyone is throwing you their pitch:)